Amino acid foliar fertilizer for vegetable planting
Amino acid foliar fertilizer is made from fermented soybean meal using amino acid fermentation agent to produce amino acid foliar fertilizer. There are two methods for producing amino acid fertilizers (liquid state) by fermenting soybean meal with a microbial fermentation agent (liquid state). One of them is fermentation in a fermentation tank or shaker, which may be referred to as "the ocean method"; the other is the use of Cement pool or large cylinder, adjust air, temperature, moisture, artificial accumulation method, can be called "simple method", can also be called "soil method", the use of soil method is wider. What are the benefits of amino acid foliar fertilizer and what are the precautions?
Amino acid foliar fertilizer advantages:
(1) The foliar dressing can make the crop directly obtain effective nutrients through the leaves. When using the top dressing, some nutrients are often easily fixed by the soil to reduce the utilization rate of the plants.
(2) The rate of absorption and transformation of leaf nutrients is faster than that of the root; taking urea as an example, the topdressing of the root for 4 to 5 days can be effective, and the foliar spraying can be effective on the same day.
(3) The foliar dressing can promote the absorption of nutrients in the root and improve the effect of root fertilization.
(4) After foliar spraying of certain nutrient elements, it can regulate the activity of enzymes, promote the formation of chlorophyll, enhance photosynthesis, and improve the quality and yield. In short, foliar dressing is a fertilization method with low cost, quick effect, simple method and easy popularization. However, the crops absorb mineral nutrients mainly by the roots, and the foliar fertilizer can only be used as an auxiliary means. The production should still be based on root fertilization. When using foliar fertilizers, it must be done on the basis of adequate base fertilizer and timely fertilizer application. In this way, the desired effect can be achieved.
Amino acid foliar fertilizer fertilization points:
First, fertilizer types should be appropriate. There are many kinds of fertilizers suitable for vegetable foliage dressing, commonly used are urea, potassium dihydrogen phosphate, superphosphate, potassium phosphate, zinc sulfate, rice vinegar, borax, rare earth and ash extraction, and volatile and insoluble fertilizers are not suitable. , Such as ammonium bicarbonate, calcium magnesium phosphate fertilizer.
Second, the depth of spray fertilizer should be appropriate. The suitable concentration of foliar fertilizer is 1%~2% urea; 0.2%~0.5% potassium dihydrogen phosphate; 0.2%~0.3% ammonium sulfate; 0.03%~0.1% borax; 1%~2% superphosphate; 0.3%; rare earth 0.3% to 0.1%.
Third, the amount of spray fertilizer should be sufficient. When spraying, the leaves of the plants are evenly covered with small droplets of mist, and it is advisable not to drip. Generally, 40-60 kg of fertilizer is needed per acre.
Fourth, the spray site should be properly. The main part of the foliar dressing is the young stems and leaves of the vegetables, and the front and back shall be sprayed.
Fifth, the application period should be appropriate. Leafy vegetables are generally applied in the early and middle stages of growth; Solanaceae, melons, beans and rhizomes are generally applied in the middle and late stages.
Sixth, the number of spraying should be appropriate. The general foliar application is carried out 2 to 3 times, once every 7 to 10 days.
Seven, pay attention to the application time. The foliar dressings are mostly chosen to be sprayed in sunny afternoon when the sunlight is not strong enough so as to prolong the moistening time of the fertilizer solution on the vegetables and improve the fertilizer efficiency. For example, after 3 hours of spraying, the rain should be sprayed after sunny, but the concentration should be appropriate. reduce.
Eight, fertilizer should be applied reasonably. When dressing vegetable leaves, two or more types of fertilizers should be properly mixed and the effect of increasing production should be significant. However, they cannot be used arbitrarily. For example, potassium dihydrogen phosphate cannot be mixed with rare earths. The filtered human waste cannot be mixed with the ash extraction solution. Zinc phosphate cannot be mixed with superphosphate.
Nine, fertilizer should be applied rationally. Phosphorus-containing fertilizers such as superphosphate are sprayed after immersed for 24 hours, diluted with 1%-2% of the supernatant, and sprayed with potash ash supernatant diluted with potassium for 2 hours.
10. Choose suitable fertilizer according to the type of vegetables. Leaf vegetables, such as cabbage, celery, spinach and other foliar fertilizer use more urea, potassium dihydrogen phosphate; solanaceous fruit, melons such as tomatoes, cucumbers and other use of nitrogen, phosphorus, potassium or multi-component fertilizer; Root vegetables such as potatoes, radishes, onions, etc. use more phosphorus and potassium fertilizers.
In conclusion, the principle of amino acid foliar fertilizer is to fertilize fertilizer in water and spray it on the foliage. The method is simple, convenient, low cost, quick and efficient. It is especially suitable for top-dressing of trace elements and has a positive effect on increasing the yield and quality of vegetables.
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